10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free CA-CDL questions are organized by exam domain, so you can see how each part of the California CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
At highway speed, a tractor's right-front tire suddenly blows and the vehicle begins pulling toward the shoulder. What should the driver do first?
Correct answer: A - Grip the wheel, ease off the accelerator, and wait to brake until control is stable
A 60-foot combination vehicle is traveling at 50 mph on a dry road. Using the CDL following-distance rule, what minimum interval should the driver maintain?
Correct answer: B - 7 seconds
On level ground with the wheels chocked, a tractor-semitrailer has the engine off and the parking and service brakes released. After pressure stabilizes, the system loses 3.5 psi in one minute. How should this result be interpreted?
Correct answer: C - It fails because static loss for a combination must be less than 3 psi in one minute
While fanning the brakes during a controlled pre-trip test, the low-air warning does not activate until system pressure reaches 52 psi. What does the result mean?
Correct answer: B - It fails because the warning must activate before pressure drops below 55 psi
After a tractor couples to a semitrailer and passes the pull test, which visual finding most strongly confirms that the fifth wheel is properly locked?
Correct answer: A - No gap, jaws around the kingpin shank, release arm locked, and safety latch engaged
A school-bus driver counts six pupils leaving at a stop but can see only five at the curb. The sixth pupil is no longer visible in any mirror. What must occur before the bus moves?
Correct answer: B - Secure the bus, take the key, and check around and underneath it
Which entry shows the required basic-description sequence for gasoline on a hazardous-materials shipping paper?
Correct answer: D - UN1203, Gasoline, 3, PG II
A passenger bus approaches a passive railroad crossing with no train visible. Which procedure meets the crossing rule?
Correct answer: D - Stop 15 to 50 feet away, quiet the bus, open the service door and driver window as needed, then cross without shifting
A smooth-bore tanker is dispatched with a half-full compartment. A new driver assumes the lighter load will handle like an empty dry van. Which adjustment is most important?
Correct answer: C - Increase following distance and make acceleration, braking, and steering inputs smooth
A driver must assemble a double using one trailer weighing 28,000 pounds and another weighing 17,000 pounds. How should the trailers be ordered?
Correct answer: A - 28,000-pound trailer first; 17,000-pound trailer last
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